Hello, I am a novice when it comes to engine repair, but need to replace my stock 350TBI in my 91 K5 Blazer due to the piston pin knocking. I am wanting to put a 350 back in but one with a little more HP. It looks like I am kinda limited(unless I go with an expensive custom engine) due to it being fuel injected. I have found the GM 350/260 that I think will work with my set up but not positive. Can anyone give any suggestions on this or different ways to go please. I can spend about $2200 on engine. Thanks in advance